DE69733250D1 - Differential touch sensor and control circuitry for - Google Patents

Differential touch sensor and control circuitry for

Info

Publication number
DE69733250D1
DE69733250D1 DE1997633250 DE69733250A DE69733250D1 DE 69733250 D1 DE69733250 D1 DE 69733250D1 DE 1997633250 DE1997633250 DE 1997633250 DE 69733250 A DE69733250 A DE 69733250A DE 69733250 D1 DE69733250 D1 DE 69733250D1
Authority
DE
Grant status
Grant
Patent type
Prior art keywords
control circuitry
touch sensor
differential touch
differential
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE1997633250
Other languages
German (de)
Other versions
DE69733250T2 (en )
Inventor
David W Caldwell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOUCHSENSOR TECHNOLOGIES, L.L.C., WHEATON, ILL., U
Original Assignee
David W Caldwell
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making or -braking
    • H03K17/94Electronic switching or gating, i.e. not by contact-making or -braking characterised by the way in which the control signal is generated
    • H03K17/945Proximity switches
    • H03K17/955Proximity switches using a capacitive detector
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making or -braking
    • H03K17/94Electronic switching or gating, i.e. not by contact-making or -braking characterised by the way in which the control signal is generated
    • H03K17/96Touch switches
    • H03K17/962Capacitive touch switches
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making or -braking
    • H03K17/94Electronic switching or gating, i.e. not by contact-making or -braking characterised by the way in which the control signal is generated
    • H03K17/96Touch switches
    • H03K2017/9602Touch switches characterised by the type or shape of the sensing electrodes
    • H03K2017/9604Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
    • H03K2017/9613Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using two electrodes per touch switch
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K2217/00Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96Touch switches
    • H03K2217/9607Capacitive touch switches
    • H03K2217/960735Capacitive touch switches characterised by circuit details
    • H03K2217/96075Capacitive touch switches characterised by circuit details involving bridge circuit
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K2217/00Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96Touch switches
    • H03K2217/9607Capacitive touch switches
    • H03K2217/960755Constructional details of capacitive touch and proximity switches
    • H03K2217/960775Emitter-receiver or "fringe" type detection, i.e. one or more field emitting electrodes and corresponding one or more receiving electrodes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T307/00Electrical transmission or interconnection systems
    • Y10T307/74Switching systems
    • Y10T307/766Condition responsive
    • Y10T307/826Electrical
DE1997633250 1996-12-10 1997-12-08 Differential touch sensor and control circuitry for Expired - Lifetime DE69733250D1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US3231896 true 1996-12-10 1996-12-10
PCT/US1997/022738 WO1998026506A1 (en) 1996-12-10 1997-12-08 Differential touch sensors and control circuit therefor

Publications (1)

Publication Number Publication Date
DE69733250D1 true DE69733250D1 (en) 2005-06-16

Family

ID=21864300

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1997633250 Expired - Lifetime DE69733250D1 (en) 1996-12-10 1997-12-08 Differential touch sensor and control circuitry for
DE1997633250 Expired - Lifetime DE69733250T2 (en) 1996-12-10 1997-12-08 Differential touch sensor and control circuitry for

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE1997633250 Expired - Lifetime DE69733250T2 (en) 1996-12-10 1997-12-08 Differential touch sensor and control circuitry for

Country Status (9)

Country Link
US (1) US6310611B1 (en)
EP (1) EP0883931B8 (en)
JP (1) JP4162717B2 (en)
CN (1) CN1158762C (en)
CA (1) CA2257920C (en)
DE (2) DE69733250D1 (en)
ES (1) ES2242241T3 (en)
GB (1) GB9818468D0 (en)
WO (1) WO1998026506A1 (en)

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WO1998026506A1 (en) 1998-06-18 application
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